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Electric Circuits

Electric Circuits
Condition of symmetry in Z-parameter representation is

 Z12 = Z22.
 Z11 = Z22.
 Z11 = Z12.
 Z12 = Z21.

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Electric Circuits
Three resistances of two ohms each are connected in star. In the equivalent delta representation each resistance will have a value of _______________ Ω.

 3.4.
 6.
 0.6.
 5.2.

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Electric Circuits
An electrical circuit with 10 branches and 7 nodes will have

 3 loop equations.
  10 loop equations.
  4 loop equations.
 7 loop equations.

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Electric Circuits
The ratio of the resistance of a 200 W, 230 V lamp to that of a 100 W, 115 V lamp will be

 4.
 0.25.
  0.5.
  2.

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Electric Circuits
When a lossy capacitor with a dielectric of permittivity ε and conductivity σ operates at a frequency ω the loss tangent for the capacitor is given by

  σ/ω ε.
 ω ε/σ.
 ω σ/ε.
 σ ω ε.

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Electric Circuits
Ceq of two capacitors connected in series is given by

 C1C2.
 C1 = C2.
 C1 C2 / (C1 + C2).
 C1 + C2.

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MORE MCQ ON Electric Circuits

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